I disagree, I think if you walk into a pharmacy and ask for something dangerous without a prescription they shouldn't be obligated to give it to you. It's the same with medical equipment that keeps you alive.
If you want to risk your life you can do it but no one should be compelled to help you.
No one should be compelled. I mean it more in a negative manner, that it has an obligation to not stop people from helping. If someone wanted to offer a nitrogen tank, valve, tube and an easily head fitting bag for sale to people who want to commit suicide in a painless and ensured manner they be able to sell that (and people would). But in fact you cannot, and that is wrong.
Your position is not universal, and in fact strongly opposed by many. I believe that I have the absolute right to edit or terminate my own existence, either on purpose or accidentally. To the extent that anyone can own a person, people own themselves exclusively.